What Floor for a Kitchen that connects to Oak-Floored Hallway?

[Mindy Jensen]

My neighbor is redoing her kitchen. The kitchen connects to the hallway, which has 50-year-old oak flooring she's not interested in changing.

Grey cabinets, white countertops, grey-ish tile backsplash.

Wood flooring is what Pinterest shows, but she doesn't want actual wood in her kitchen, and wood-look tile will look weird butting up to the oak hallway.

Suggestions?

[Melissa Kirchhoff]

I personally like other tiles and not wood-look anyway. I'm personally obsessed with slate-like tiles, I feel like the dark contrast to white and grey kitchens are really nice, and they sometimes have enough copper-y tones to look really sharp against wood. 

I guess something like this -